Pair breaking effects in heavy fermion superconductors

Van Aken, P.; De Boer, F. R.; Spille, H.; Winkelmann, M.; Ahlheim, U.; Bredl, C. D.; Steglich, F.

doi:10.1016/0921-4534(88)90677-6

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Pair breaking effects in heavy fermion superconductors

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Van Aken, P., De Boer, F. R., Spille, H., Winkelmann, M., Ahlheim, U., Bredl, C. D., et al. (1988). Pair breaking effects in heavy fermion superconductors. Physica C, 153, 449-450. doi:10.1016/0921-4534(88)90677-6.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-D4AB-9

Abstract

Non-magnetic La and Y impurities in CeCu2.2Si2 give rise to a “diamagnetic” pair-breaking effect and, in addition, Gd causes “paramagnetic” pair breaking. In dilute (0 < × ≦ 5at%) Ce1-xLaxCu2.2Si2 alloys an “alloying-induced depression of incoherent scattering” is observed and related to the formation of antiferromagnetic order at several K.